Sphere over Kennett Sqaure, PA

The report, as filed

I was out having on my deck and I looked up in the sky saw nothing but stars. A few second later, out of the corner of my eye I see what I first thought was a plane. {I see a lot of planes living in the flight path of Philadelphia airport.} I looked for the blinking lights did not see any. Then it grew brighter and brighter, then it suddenly went dim, but still seeing it for a few more seconds as grew dimmer and dimmer. I have never seen what looked like whatever it was left the atmosphere. I was looking east and saw the object to the north east .

Held as-reported from National UFO Reporting Center (record NUFORC #111850). Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.